As discussed at a recent meeting, there is a theory our solar system is part of a binary system that involves the star Sirius – see www.binaryresearchinstitute.org/srg/SiriusResearchIntro.shtml. The idea, derived in part from Karl Heny Homan, after he had read Robert Temple's book The Sirius Mystery, together with the work of Schwaller de Lubicz, who noted 'for it is remarkable that owing to the precession of the equinoxes, on the one hand, and the movement of Sirius, on the other, the position of the Sun with respect to Sirius is displaced in the same direction, almost exactly to the same extent …' (1982). Karl Henry Homan set out to find out if this was true. His observations over 20 years show definitively that Sirius does not precess. Sirius maintains its position relative to the Sun.
On the same web site, the article, Asymmetrical Shape of Heliosphere Raises Questions – it seems that when the spaceships Voyager 1 and 2 reached the edge of the solar system, at different points of the heliosphere, there was a difference. This has led to the idea the heliosphere is not spherical – but elongated. The Sun's solar wind is driven by its magnetic field – emitting CMEs. The article wonders if the solar system is elongated because it too is affected by the solar wind from a nearby star – or stars.